Device for correcting well wall and enhancing drill gauge protection effect through rolling

A drill bit and borehole wall technology, which is applied in the field of devices that use rolling action to correct the borehole wall and enhance the drill bit gage effect, can solve problems such as large torque, and achieve the effects of simple manufacturing process, reduced gyration probability, and increased contact area

Active Publication Date: 2013-08-07
四川保瑞特钻头有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] In recent years, with the development of directional technology in drilling engineering, the rotary steerable tools have required the drill bi

Method used

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  • Device for correcting well wall and enhancing drill gauge protection effect through rolling
  • Device for correcting well wall and enhancing drill gauge protection effect through rolling
  • Device for correcting well wall and enhancing drill gauge protection effect through rolling

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Embodiment Construction

[0063] The present invention will be further described below in conjunction with accompanying drawing, protection scope of the present invention is not limited to the following:

[0064] like figure 1 , figure 2 , image 3 , Figure 4 As shown, the device for correcting the well wall by rolling action to enhance the gage effect of the drill bit includes a roller seat 2 installed on the gauge cutting surface of the drill bit 12 through a screw 1 and a roller seat 2 rotatably installed on the roller seat 2 through a pin shaft 3 Roller 4, at least one pin shaft 3 is arranged on the drum base 2, the drum 4 is set on the pin shaft 3, the two ends of the pin shaft 3 are installed on the drum base 2, and the axis line of the drum 4 is parallel to the vertical plane And the axis line of the drum 4 is parallel to the axis line of the drill bit 12 or there is a space angle less than 90°, that is, the vertical plane is parallel and the axis line of the drum 4 and the axis line of the...

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Abstract

The invention discloses a device for correcting a well wall and enhancing a drill gauge protection effect through rolling. The device comprises a roller base (2) and a roller (4), wherein the roller base (2) is installed on a gauge-protection cutting surface of a drill (12) through a screw (1), the roller (4) is rotatably installed on the roller base (2) through a pin roll (3), the roller (4) is sleeved on the pin roll (3), and two ends of the pin roll (3) are installed on the roller base (2). The device has the advantages that the well wall is corrected through rolling, the friction between the roller and the well wall is reduced, the effective abrasion volume is increased, and the gauge protection effect is enhanced; simultaneously, a gauge protection unit can roll or roll and slide relative to the well wall and has well reaming and well wall smoothening functions, so that the well quality is improved; the reaction torque during drilling is reduced, and the drill stability is improved; and by the aid of the device, the well track is ordered, the reaction torque during drilling can be reduced in highly-deviated wells and horizontal wells, the drill rotation probability is reduced, the drill service life is prolonged, and the mechanical drilling speed is accelerated.

Description

technical field [0001] The invention relates to the technical field of oil and gas drilling equipment, in particular to a device for correcting the well wall by rolling action and enhancing the effect of drill bit diameter protection. Background technique [0002] During the drilling process, the drill bit directly contacts the rock, and breaks the rock through cutting and punching. Drilling abrasive formations such as quartzite, hard dolomite, chert, etc. will accelerate the wear of the cutting teeth of the drill bit, especially the outer row of cutting teeth. As the diameter of the outer row of teeth decreases, the diameter of the drill bit decreases, and the diameter of the wellbore also decreases. The narrowing of the wellbore makes it difficult to drill again, and due to a large amount of frictional heat and large torque, the damage of the drill bit will be accelerated. [0003] The existing drill bit with stepped gauge structure is mainly composed of steel body, PDC c...

Claims

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Application Information

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IPC IPC(8): E21B10/46E21B10/00
Inventor 杨志葛惠祥
Owner 四川保瑞特钻头有限公司
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